FR65E Fujitsu Microelectronics, Inc., FR65E Datasheet - Page 22
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FR65E
Manufacturer Part Number
FR65E
Description
32-bit Microcontroller
Manufacturer
Fujitsu Microelectronics, Inc.
Datasheet
1.FR65E.pdf
(87 pages)
- Current page: 22 of 87
- Download datasheet (309Kb)
22
MB91307B
4. Registers
General Purpose Register
PS (Program Status Register)
CCR (Condition Code Register)
N : Negative flag, default value at reset undefined.
C : Carry flag, default value at reset undefined.
S : Stack flag, cleared to “0” at reset.
Z : Zero flag, default value at reset undefined.
V : Overflow flag, default value at reset undefined.
Registers R 0 to R 15 are general-purpose registers. These registers can be used as accumulators for compu-
tation operations, or as pointers for memory access.
Of the 16 registers, enhanced commands are provided for the following registers to enable their use for particular
applications.
Default values at reset are undefined for R0 to R14. The value for R15 is 00000000
This register holds the program status, and is divided into three parts, ILM, SCR, and CCR.
All bits not defined in the diagram are reserved bits with read value “0” at all times. Write access to these bits
is not enabled.
I : Interrupt flag, cleared to “0” at reset.
R13: Virtual accumulator
R14: Frame pointer
R15: Stack pointer
Bit position
31
R0
R1
R12
R13
R14
R15
7
6
S
5
CCR Register
4
I
N
3
32 bits
AC
FP
SP
20
2
Z
ILM
PS Register
V
1
16
C
0
[Default value]
- - 00XXXX
10
XXXX XXXX
XXXX XXXX
[Default values]
SCR
0000 0000
8
B
7
H
H
H
H
(SSP value).
CCR
0
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